ASTROSAT CZTI

Data Quality Report

Orbit 42520

Creation date: 2024-06-27T22:41:09.185830
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_041T01_9000005808_42520cztM0_level2.fits modeM0/AS1A07_041T01_9000005808_42520cztM0_level2_quad_clean.evt
Size (bytes)313,320,96094,429,440
Size298.8 MB 90.1 MB
Events in quadrant A2,984,841628,137
Events in quadrant B2,605,660642,598
Events in quadrant C2,848,665624,069
Events in quadrant D2,722,183572,804

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122733
B0116562
C0120842
D0121982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5601100.178540%
B5602140.249911%
C5602781.392360%
D5602661.178151%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 9755 5603 5 5 0.05% 0.09%
B 9756 5604 8 8 0.08% 0.14%
C 9756 5604 75 75 0.77% 1.34%
D 9756 5604 41 41 0.42% 0.73%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 551886 4429.85 607 598 124.4
A 12 189 45036 357.08 607 598 124.4
A 2 79 9973 75.33 607 598 124.4
B 0 245 159404 1354.9 604 588 117.2
B 5 255 75369 637.98 604 588 117.2
B 12 111 14713 120.5 604 588 117.2
C 0 239 263368 1898.64 592 597 138.4
C 15 214 252662 1821.29 592 597 138.4
C 14 254 18431 128.86 592 597 138.4
D 12 6 118006 821.86 591 576 142.9
D 1 52 77239 536.55 591 576 142.9
D 10 199 61507 426.44 591 576 142.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter